With the internet moving so fast into the world of mobile devices, it's
important to design for a variety of platforms. Many websites these days
have a unique mobile optimized site which is great for usability.

Although mobile browsers are capable of rendering your normal
website, some functionality does not carry across. Touch screens have no
concept of "hover" so drop down menus must be activated on click.
Screen estimate and the precision of the user is impaired on touch
devices, so links and other clickable objects need to be rendered
bigger.

The key thing to remember is that a mobile phone is a
different device and have completely different use cases. EBay on a
desktop can be used for a large variety of cases, including the creation
of new bids, while EBay Mobile is primarily for checking activity while
on the move. The focus of a mobile design for EBay centers on browsing,
bidding and status updates for products - it doesn't need to cover all
cases, just the right ones.

True mobile interface design focuses that which is used on mobile and simplifies the process.

​Figure: Bad Example - TimePro as it renders on mobile. It is near unusable!

These days more than 50% of people use mobile devices to browse websites.

Therefore, it is very important to hyperlink your phone number to increase the rate of conversion and improve the mobile user experience. This enables click and call, and eliminates the need to copy and paste phone numbers.

​Devices an​d computers that don’t have phone functionality will either open a phone app or add the number to a contact list.

Help and improve these rules

Nothing great is easy. The SSW rules are a great resource for developers all around the world.
However it’s hard to keep rules current and correct. If you spot a rule that is out of date, please email or if you are cool tweet me.